Internal-combustion engine.



WITNESSES M. SIEVEKING Patented Jan. 1, 1918.

2 SHEETS-SHEET lf j M. maven-me. INTERNAL COMBUSTION. ENGINE.APPLICATION mm 116.14. 1917.

135,045., Patented Jau1 .1,1918.

'2 SHEETS-SHEET 2..-

WITWESSES IN l/E/V TOR Arm/MP8 r are ararvr caries.

MABTINUS SIEVEKING, OF LAKE MAHOPAC, NEW YORK.

| I INTERNAL-COMBUSTION ENGINE.

To all whom it may concern:

Be it known that I, MARrINUs SIEVEKING, a citizen of the Netherlands,and a resident of Lake Mahopac, in the county of Putnam and State of NewYork, have invented a new and Improved lnternal combustion Engine,

of which the following is a full, clear, and

cylinders are provided in lieu of inlet valves.'

A still further object of the invention is to 4 provide astructurehaving a divided cylinder having a plurality of explosionchambers with a piston in each chamber so that in at least some of thechambers perfectly pure combustible matter may be positioned upon eachcompression so as to positively insure explosion on each revolution.

In the accompanying drawing:

Figure 1 is a longitudinal vertical section through an engine disclosingan embodiment of the invention.

Fig. 2 is a top plan view of the engine in Fi 1.

i i 3 is a view similar a) Fig, 1 but disclosing a plurality of powercylinders.-

Referrin to the accompanying drawings by numera s, 1 indicates a casingin which the crank shaft 2 is mounted, said shaft being supported-bysuitable bearings and can rylng a fly wheel 3. Arranged in the upperpart of casing 1 are cylinders 4 and 5, cylinder 4 being preferablyprovided with a water jacket while a cooling jacket is not necessary forcylinder 5. Bolted or otherwise secured to cylinder 5, or supported inany desired manner is a carbureter 6 having a pipe T'communicating withthe interior of cylinder at 8, thus producing an inlet for an explosivemixture. Connected with cylinder 5 and communicating with the interiorthereof through the discharge port 9 is a pipe 10 which communicateswith the interior of cylinder 4 through port 11. Cylinder 4: is dividedby a partition member 12 so that two cylindrical chambers 13 and 14 maybe rovided for the pistons 15 and 16. Cylin ers 13 and 14 merge into acentral chamher 1? at the top whereby a single spark plug 18 may be usedfor igniting the gas in Specification of Letters Patent.

Patented Jan. It, 1918.

Application filed August 14,1917. Serial No. 186,164.

both the chambers 13 and 14.- An outlet 19 is provided near the bottomof the chamber 1% and substantially in the same horizontal plane as theinlet 11. By this construction and arrangement whenever the fresh gas orexplosive mixtures enter the cylinder 4: chamber 13 is scavenged firstand chamber 14 is scavenged last. It will also be noted that there is noremaining burnt gas in chamber 13 and chamber 14 will have but littleand that little adjacent the piston 16, whereby the spark plug 18' willbe surrounded by perfectly good gas and thereby will produce anexplosion at each revolution of the engine. Two pistons and two chambershave been shown in the cylinder 4 but it will be evident that a greaternumber may be used if desired-without departing from the spirit of theinvention. A bifurcated or yoked connecting rod 20 connects the pistonswith the crank shaft 2 and the crank 21, while a straight connecting rod22 connects thepiston 23 in chamber 5 to the shaft 2 through crank 24:.WVhen the parts are in the position shownin Fig. 1 the chambers 13 and14 have'just been scavenged and filled with an explosive mixture, and asthe pistons 15 and 16 move upwardly ports 11 and 19 are closed and theexplosive mixture is compressed. Simultaneously with the upward movementof the pistons 15 and 16, piston 23 will move downwardly and therebyprovide a rarefaction in the upper part of the chamber and also in thepipe 10, so that as soon as the piston uncovers the port 8 therarefaction or vacuum produced in the chamber will draw in a givenquantity of combustible mixture through the carburetor 6 which willproperly mix and be later compressed as the piston 23 again movesupwardly as pistons 15 and 16 move clownwardly on the explosion stroke.By the timethe pistons 15 and 16 begin to uncover ports 11 and 19 thepower ofthe explosion has been absorbed and the compression in cylinder5 has reached such a. point as to quickly force the gas or explosivemixture into the cylinder 4 where it is compressed and the process isrepeated during the continued operation of the engine. It will be notedthat the pistons 15 and 16 close the inlet and outlet ports during thecompression of the gas in the chambers 13 and 14 and cylinder 4. Thepiston 23 may be made sufficiently long to continue to cover port 8during its upstroke though preferably it is made somewhat shorter asshown in Fig. 1.

In Fig. 3 is seena slightly modified form of the invention in which thesame principle is used, but the casing 25 is made sutiiciently large toaccommodate a shaft 26 designed to be driven by two power cylinders 4-instead of one as shown in Fig. 1, also there is provided twocompression cylinders 5' with the carbureter 6 arranged thcrebetween anddis charging into oppositely extending pipes 27 and 28. By thisarrangement one compression cylinder 5 will be drawing in gas while theopposite one is compressing and consequently one cylinder 4 will befired while the other is compressing. It is evident that any number ofthe units comprising cylinders 4c and 5 and associate parts could beassociated together and connected to one shaft. be seen inlet valves andoutlet valves and all other valves are eliminated, unless the piston 23and associate parts could be termed valves as well as the pistons 15and-16, as the last mentioned pistons close the ports during a certainpart of the cycle of operation. It will also be noted that the onlymoving parts In all forms (if the invention it will are the pistons, thecrank shaft and connecting parts.

What I claim is:

In an internal combustion engine of the character described, a powercylinder divided into a plurality of chambers, said cylinder having aninlet and an outlet port at one end, a piston for each of said chambers,said pistons closing said ports when compressing and during most of theower stroke, a compression cylinder havlng a closed end, a carbureterconnected Witlithe compression cylinder at the end opposite the closedend, means for connecting the closed end of said compression cylinderWith said inlet port, and means for connecting the pis ton of thecompression cylinder and thepistons of the said chambers with the samecrank shaft, said )istons being set one hundred and eighty degrees apartwhereby the piston in the compression chamber will cause a rarefactionin the closed end of the cylinder until the inlet to the carbureter hasbeen uncovered and will then compress the charge from the carburcteruntil the completion of the power stroke of the pistons in the powercylinder M. SIEVEKlNG.

